EP3299130A1 - Inspection tool and method for non-destructive inspection of a lug - Google Patents
Inspection tool and method for non-destructive inspection of a lug Download PDFInfo
- Publication number
- EP3299130A1 EP3299130A1 EP16382447.7A EP16382447A EP3299130A1 EP 3299130 A1 EP3299130 A1 EP 3299130A1 EP 16382447 A EP16382447 A EP 16382447A EP 3299130 A1 EP3299130 A1 EP 3299130A1
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- European Patent Office
- Prior art keywords
- arm
- inspection
- guiding
- lug
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000007689 inspection Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001066 destructive effect Effects 0.000 title 1
- 239000000523 sample Substances 0.000 claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/041—Analysing solids on the surface of the material, e.g. using Lamb, Rayleigh or shear waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/10—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters
- G01B21/14—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring diameters internal diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/28—Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/004—Mounting transducers, e.g. provided with mechanical moving or orienting device
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/35—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams
- G10K11/352—Sound-focusing or directing, e.g. scanning using mechanical steering of transducers or their beams by moving the transducer
- G10K11/355—Arcuate movement
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/263—Surfaces
- G01N2291/2634—Surfaces cylindrical from outside
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/26—Scanned objects
- G01N2291/269—Various geometry objects
- G01N2291/2694—Wings or other aircraft parts
Definitions
- the present invention belongs to the field of inspection in-service of lugs looking for cracks, particularly, looking for cracks propagating radially from the circumference of the lug's hole and, more particularly, to the field of inspection in-service of lug located on an aircraft.
- UT shear waves ultrasonic inspection
- one technique consists of coupling UT probe on the surface of the lug in such a way that the beam is tangent to the circumference of the lug's hole. The optimum distance to the cracks depends on the lug thickness, the side of the lug where the crack is initiated, the cracks size, the angle of the probe applied on the lug, the probes size and the number of rebounds to reach the crack.
- This type of inspection additionally implies a theoretical calculation or modeling of the optimum parameters and practical checking.
- the inspection of lugs is not a static inspection of one point of the lug, consisting of look for cracks around the lug.
- This non-static inspection consists of sliding the probe around the circumference of the lug's hole ensuring that distance from the probe to the "expected crack” is kept optimum, and ensuring that UT beam is tangent to the lug circumference.
- the present invention provides an alternative solution for the aforementioned problems, by an inspection tool for inspection a hole of a metallic lug according to claim 1, an inspection device for inspection of metallic lug according to claim 10, and a method for detecting cracks around metallic lug according to claim 12.
- an inspection tool for inspection a hole of a metallic lug according to claim 1 an inspection device for inspection of metallic lug according to claim 10
- a method for detecting cracks around metallic lug according to claim 12 in dependent claims, preferred embodiments of the invention are defined.
- the invention provides an inspection tool for inspection of a hole of a metallic lug, comprising,
- component of the tool will be understood as each component part of the tool which are the first arm, the second arm, the third arm and the housing element.
- the inspection tool simplifies aircraft inspections, standardizing the usage of a tool (reducing the variety of tools), and ensuring the inspection quality by the essential parameters (inner diameter of the lug's hole, distance between the hole and the probe, distance between the probe and the "expected crack", and distance to fix the tool to the edge of the lug's hole).
- the inspection tool advantageously provides cost reduction due to no need to manufacture a specific tool for each lug configuration, storage and monitoring reduction, and specially time of inspection reduction.
- the guiding projections of the second arm are linked to the first arm and third arm through the guiding cavities of each first and third arm respectively, being such guiding projections configured to slide along said guiding cavities.
- the guiding projection of the housing element is linked to the second arm through the guiding cavity of the second arm, being such guiding projection configured to slide along said guiding cavity.
- these embodiments allow moving and fit the tool on the surface of the lug and around the lug's hole. In this way, each component of the tool can slide on the adjacent component to achieve the necessary adjustment. Also, these embodiments increase the capability of selecting the tool position for inspection around a specific hole, allowing the possibility to modify the position of the tool as needed for each particular case.
- the housing element is an interchangeable element.
- the first housing part and the second housing part of the housing element are configured to house a probe.
- these embodiments allow the possibility to apply different probe sizes or probe types.
- the angle formed between the first lateral part and the central part of the first arm is comprised between 100° - 115°. In a preferably embodiment, the angle formed between the first lateral part and the central part of the first arm is 108°. In another embodiment, the angle formed between the second lateral part and the central part of the first arm is comprised between 125° - 145°. In a preferably embodiment, preferably the angle formed between the second lateral part and the central part of the first arm is 135°.
- these ranges of angles allow inspecting the broadest values of the diameter of the lug's hole, which in turn are the most used in the aeronautical field.
- each guiding projection comprises respectively at least a fixing element, said fixing elements being configured to fix the guiding projections to the first, second and third arm respectively.
- this embodiment allows fix each component of the tool with the adjacent component, in such a way that each component of the tool cannot slide with respect to the adjacent component.
- the invention provides an inspection device for inspection of a metallic lug, comprising,
- the probe is an ultrasonic probe.
- the probe is a micro-miniature ultrasonic probe.
- this type of probes has a small size, which allows the inspection of a high range of diameters of the lug's hole.
- the invention provides a method for detecting cracks around metallic lug comprising the following steps:
- this method allows the possibility to modify the position of the tool as needed for each particular case.
- the tool is adjusted. This method ensures that the inspector slides the probe around the hole at the optimal position for looking for the crack.
- the method further comprises applying a couplant on a surface of the lug before step d).
- this embodiment improves inspection with an ultrasonic probe.
- Figure 1 y 2 show one embodiment of an inspection tool (10) for inspection of a hole (15) of a metallic lug (18) that comprises a first arm (1), a second arm (2), a third arm (3) and a housing element (4).
- the first arm (1) comprises a first lateral part (1.1), a central part (1.2) and a second lateral part (1.3), comprising the central part (1.2) a guiding cavity (5). Additionally, the second and third arm (2, 3) comprises a guiding cavity (6, 7) respectively.
- the cavities located in each arms allow the movement of each component (1, 2, 3, and 4) of the tool (10).
- the housing element (4) is an interchangeable element that comprises a first housing part (4.1) and a second housing part (4.2), and is configured to house a probe (as it can be seen in Figures 4 and 5A-5B ).
- the possibility to interchange the housing element (4) allows using different type and sizes of probes.
- the first housing part (4.1) comprises a U-shaped housing arm (4.1.1) extending from the first housing part (4.1).
- the U-shaped housing arm (4.1.1) defines a non-closed area (4.1.2).
- the second housing part (4.2) comprises an L-shaped housing arm (4.2.1) and a housing arm (4.2.2), both extending from the second housing part (4.2).
- the L-shaped housing arm (4.2.1) and the housing arm (4.2.2) define a non-closed area (4.2.3).
- non-closed areas (4.1.2, 4.2.3) provide some flexibility and facilitate the positioning of the probe (14) in the housing element (4).
- Figure 1 shows one embodiment of the inspection tool (10) wherein the first lateral part (1.1) and the central part (1.2) forms an angle (A), and wherein the second lateral part (1.3) and the central part (1.2) forms an angle (B).
- the angle (A) is comprised between 100° - 115°
- the angle (B) is comprised between 125° - 145°.
- the angle (A) is 108°
- the angle (B) is 135° (as it can be seen in Figure 1 ).
- Figure 3 shows one embodiment of the inspection tool (10) wherein the second arm (2) comprises guiding projections (2.3, 2.4); and wherein the housing element (4) comprises a guiding projection (4.3).
- the guiding projections (2.3, 2.4) are linked to the first arm (1) and third arm (3) through the guiding cavities (5, 7) of each first and third arms (1, 3) respectively.
- the guiding projection (4.3) is linked to the second arm (2) through the guiding cavity (6) of the second arm (2).
- the guiding projections are configured to slide along the guiding cavities in order to allow the movement of each component (1, 2, 3, and 4) of the tool (10).
- first arm (1), third arm (3) and the housing element (4) may vary their position independently of each other in relation to the second arm (2).
- FIG. 1 and 2 show one embodiment of the inspection tool (10) wherein the guiding projections (2.3, 2.4, and 4.3) comprise, respectively, a fixing element (11, 12, and 13). These fixing elements (11, 12, 13) are configured to fix the guiding projections (2.3, 2.4 and 4.3) to the arms (1, 2, and 3).
- Figure 3 shows one embodiment of the inspection tool (10) without the fixing elements (11, 12, and 13) in order to observe details of each guiding projections (2.3, 2.4 and 4.3).
- These guiding projections (2.3, 2.4, and 4.3) are configured to slide along the guiding cavities (7, 5, and 6) respectively.
- the first arm (1) may vary its position in relation to the second arm (2) with a constant angle (C) formed between the central part (1.2) of the first arm (1) and the second arm (2).
- the third arm (3) may vary its position in relation to the second arm (2) with a constant angle (D) formed between said second and third arm (2, 3).
- the angle (C) is comprised between 100° - 115°. In a more particular embodiment, the angle (C) is 108°.
- the angle (D) has a value of 90°.
- this angle (D) ensures the tangency between the inspection tool (10) and the lug's hole (15). Furthermore, said angle (D) ensures that the beam of the probe is perpendicular to the crack.
- Figures 5A-5B and 6A-6B show one embodiment of an inspection device (20) for inspection of a metallic lug (18) that comprises an inspection tool (10) and a probe (14) wherein the inspection tool (10) is configured to be used depending on the diameter of the leg's hole to be inspected.
- the first arm (1) of the tool (10) comprises a first lateral part end (1.1.1) and a second lateral part end (1.3.1) which are configured to be in contact with the edge of the hole (15) of the metallic lug (18).
- the third arm (3) of the tool (10) comprises a first and a second end (3.1, 3.2) which are configured to be in contact with the edge of the hole (15) of the metallic lug (18).
- Figures 5A-5B show one embodiment of the inspection device (20), wherein the tool (10) is located on the surface of the metallic lug (18), and wherein the first lateral part end (1.1.1) and the first end (3.1) are in contact with the edge of the hole (15). Also, the probe (14) is located in the second housing part (4.2) of the housing element (4).
- figures 5A and 5B show an example wherein the diameter of the lug's hole (15) is comprised between 15 - 100 mm.
- the inspection device (20) is configured to work in the way that the first lateral part end (1.1.1) and the first end (3.1) are in contact with the edge of the hole (15).
- the inspection device (20) in order to detect cracks around the metallic lug, the inspection device (20) must be moved in a first direction (clockwise direction) (16) as it can be seen in figure 5B .
- Figures 6A-6B show one embodiment of the inspection device (20), wherein the tool (10) is located on the surface of the metallic lug (18), and wherein the seconds lateral part end (1.3.1) and the second end (3.2) are in contact with the edge of the leg's hole (15). Also, the probe (14) is located in the first housing part (4.1) of the housing element (4).
- figures 6A and 6B shows an example wherein the diameter of the leg's hole (15) is comprised between 100 - 130 mm.
- the inspection device (20) is configured to work in the way that second lateral part end (1.3.1) and the second end (3.2) are in contact with the edge of the hole (15).
- the inspection device (20) in order to detect cracks around the metallic lug, the inspection device (20) must be moved in a second direction (counter-clockwise direction) (17) as it can be seen in figure 6B .
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Abstract
Description
- The present invention belongs to the field of inspection in-service of lugs looking for cracks, particularly, looking for cracks propagating radially from the circumference of the lug's hole and, more particularly, to the field of inspection in-service of lug located on an aircraft.
- In ordinary inspection of an aircraft, there are some operations for inspection specific structural elements. Until know, looking for cracks are currently performed by shear waves ultrasonic inspection (UT). For example, one technique consists of coupling UT probe on the surface of the lug in such a way that the beam is tangent to the circumference of the lug's hole. The optimum distance to the cracks depends on the lug thickness, the side of the lug where the crack is initiated, the cracks size, the angle of the probe applied on the lug, the probes size and the number of rebounds to reach the crack.
- This type of inspection additionally implies a theoretical calculation or modeling of the optimum parameters and practical checking. Also, the inspection of lugs is not a static inspection of one point of the lug, consisting of look for cracks around the lug. This non-static inspection consists of sliding the probe around the circumference of the lug's hole ensuring that distance from the probe to the "expected crack" is kept optimum, and ensuring that UT beam is tangent to the lug circumference.
- Unfortunately, it is difficult to comply with the above requirements disclosed, consequently, dedicated support tools are defined to ensure proper probe sliding on the particular lug configuration. Thus, each operator must manufacture or buy, store and monitor periodically the tools defined in the maintenance manuals in order to perform this type of inspection.
- Therefore, there is a need for a particular tool which makes easier and simpler the inspection of lugs, solving the problems of the state of the art.
- The present invention provides an alternative solution for the aforementioned problems, by an inspection tool for inspection a hole of a metallic lug according to
claim 1, an inspection device for inspection of metallic lug according toclaim 10, and a method for detecting cracks around metallic lug according toclaim 12. In dependent claims, preferred embodiments of the invention are defined. - In a first inventive aspect, the invention provides an inspection tool for inspection of a hole of a metallic lug, comprising,
- a first arm comprising
- a first lateral part with a first lateral part end, the first lateral part end being configured to be in contact with the hole of the metallic lug, a central part,
- and a second lateral part with a second lateral part end, the second lateral part end being configured to be in contact with the hole of the metallic lug,
- the first lateral part and the central part forming an angle (A),
- the second lateral part and the central part forming an angle, and said central part comprising a guiding cavity,
- a second arm comprising
- a guiding cavity and
- two ends, each end comprising respective guiding projections,
- a third arm, comprising
- a guiding cavity,
- a first end and
- a second end,
- the first and second end being configured to be in contact with the hole of the metallic lug, and
- a housing element comprising
- a first housing part,
- a second housing part, and
- a guiding projection,
- Throughout this entire document, "component" of the tool will be understood as each component part of the tool which are the first arm, the second arm, the third arm and the housing element.
- Advantageously, the inspection tool simplifies aircraft inspections, standardizing the usage of a tool (reducing the variety of tools), and ensuring the inspection quality by the essential parameters (inner diameter of the lug's hole, distance between the hole and the probe, distance between the probe and the "expected crack", and distance to fix the tool to the edge of the lug's hole).
- Additionally, the inspection tool advantageously provides cost reduction due to no need to manufacture a specific tool for each lug configuration, storage and monitoring reduction, and specially time of inspection reduction.
- In a particular embodiment, the guiding projections of the second arm are linked to the first arm and third arm through the guiding cavities of each first and third arm respectively, being such guiding projections configured to slide along said guiding cavities. In other particular embodiment, the guiding projection of the housing element is linked to the second arm through the guiding cavity of the second arm, being such guiding projection configured to slide along said guiding cavity.
- Advantageously, these embodiments allow moving and fit the tool on the surface of the lug and around the lug's hole. In this way, each component of the tool can slide on the adjacent component to achieve the necessary adjustment. Also, these embodiments increase the capability of selecting the tool position for inspection around a specific hole, allowing the possibility to modify the position of the tool as needed for each particular case.
- In a particular embodiment, the housing element is an interchangeable element. In another embodiment, the first housing part and the second housing part of the housing element are configured to house a probe.
- Advantageously, these embodiments allow the possibility to apply different probe sizes or probe types.
- In a particular embodiment, the angle formed between the first lateral part and the central part of the first arm is comprised between 100° - 115°. In a preferably embodiment, the angle formed between the first lateral part and the central part of the first arm is 108°. In another embodiment, the angle formed between the second lateral part and the central part of the first arm is comprised between 125° - 145°. In a preferably embodiment, preferably the angle formed between the second lateral part and the central part of the first arm is 135°.
- Advantageously, these ranges of angles, and in particular the preferred angles, allow inspecting the broadest values of the diameter of the lug's hole, which in turn are the most used in the aeronautical field.
- In a particular embodiment, each guiding projection comprises respectively at least a fixing element, said fixing elements being configured to fix the guiding projections to the first, second and third arm respectively. Advantageously, this embodiment allows fix each component of the tool with the adjacent component, in such a way that each component of the tool cannot slide with respect to the adjacent component.
- In a second inventive aspect, the invention provides an inspection device for inspection of a metallic lug, comprising,
- An inspection tool according to any embodiment of the first inventive aspect, and
- A probe housed in any of the first or second housing parts of the housing element.
- In a particular embodiment, the probe is an ultrasonic probe. In a more particular embodiment, the probe is a micro-miniature ultrasonic probe. Advantageously, this type of probes has a small size, which allows the inspection of a high range of diameters of the lug's hole.
- In a third inventive aspect, the invention provides a method for detecting cracks around metallic lug comprising the following steps:
- a) measuring the diameter of a hole of the metallic lug,
- b) providing an inspection device according to any embodiment of the second inventive aspect,
- c)positioning and regulating the inspection device around the hole of the metallic lug,
- d) sliding the inspection device around the hole of the lug, and
- e) detecting cracks.
- Advantageously, this method allows the possibility to modify the position of the tool as needed for each particular case. Thus depending on the diameter of the leg's hole to be inspected, the tool is adjusted. This method ensures that the inspector slides the probe around the hole at the optimal position for looking for the crack.
- In a particular embodiment, the method further comprises applying a couplant on a surface of the lug before step d). Advantageously, this embodiment improves inspection with an ultrasonic probe.
- All the features described in this specification (including the claims, description and drawings) and/or all the steps of the described method can be combined in any combination, with the exception of combinations of such mutually exclusive features and/or steps.
- These and other characteristics and advantages of the invention will become clearly understood in view of the detailed description of the invention which becomes apparent from a preferred embodiment of the invention, given just as an example and not being limited thereto, with reference to the drawings.
- Figure 1
- This figure shows a plan view of the inspection tool according to the present invention.
- Figure 2
- This figure shows a perspective view of the inspection tool according to the present invention.
- Figure 3
- This figure shows another perspective view of the inspection tool according to the present invention without the fixing elements of each guiding projection.
- Figure 4
- This figure shows a perspective view of the housing element according to the present invention.
- Figure 5A-5B
- These figures show a particular embodiment of the inspection device according to the present invention.
- Figure 6A-6B
- These figures show another embodiment of the inspection device according to the present invention.
- Once the object of the invention has been outlined, specific non-limitative embodiments are described hereinafter.
-
Figure 1 show one embodiment of an inspection tool (10) for inspection of a hole (15) of a metallic lug (18) that comprises a first arm (1), a second arm (2), a third arm (3) and a housing element (4).y 2 - The first arm (1) comprises a first lateral part (1.1), a central part (1.2) and a second lateral part (1.3), comprising the central part (1.2) a guiding cavity (5). Additionally, the second and third arm (2, 3) comprises a guiding cavity (6, 7) respectively. The cavities located in each arms allow the movement of each component (1, 2, 3, and 4) of the tool (10).
- The housing element (4) is an interchangeable element that comprises a first housing part (4.1) and a second housing part (4.2), and is configured to house a probe (as it can be seen in
Figures 4 and5A-5B ). The possibility to interchange the housing element (4) allows using different type and sizes of probes. - Additionally, as it can be seen in
Figure 4 , the first housing part (4.1) comprises a U-shaped housing arm (4.1.1) extending from the first housing part (4.1). The U-shaped housing arm (4.1.1) defines a non-closed area (4.1.2). - In turn, the second housing part (4.2) comprises an L-shaped housing arm (4.2.1) and a housing arm (4.2.2), both extending from the second housing part (4.2). The L-shaped housing arm (4.2.1) and the housing arm (4.2.2) define a non-closed area (4.2.3).
- Advantageously, the non-closed areas (4.1.2, 4.2.3) provide some flexibility and facilitate the positioning of the probe (14) in the housing element (4).
-
Figure 1 shows one embodiment of the inspection tool (10) wherein the first lateral part (1.1) and the central part (1.2) forms an angle (A), and wherein the second lateral part (1.3) and the central part (1.2) forms an angle (B). In a particular embodiment the angle (A) is comprised between 100° - 115°, and the angle (B) is comprised between 125° - 145°. In a more particular embodiment, the angle (A) is 108°, and the angle (B) is 135° (as it can be seen inFigure 1 ). -
Figure 3 shows one embodiment of the inspection tool (10) wherein the second arm (2) comprises guiding projections (2.3, 2.4); and wherein the housing element (4) comprises a guiding projection (4.3). As it can be seen, the guiding projections (2.3, 2.4) are linked to the first arm (1) and third arm (3) through the guiding cavities (5, 7) of each first and third arms (1, 3) respectively. Additionally, the guiding projection (4.3) is linked to the second arm (2) through the guiding cavity (6) of the second arm (2). The guiding projections are configured to slide along the guiding cavities in order to allow the movement of each component (1, 2, 3, and 4) of the tool (10). - Thus, the first arm (1), third arm (3) and the housing element (4) may vary their position independently of each other in relation to the second arm (2).
- Getting back to
figures 1 and2 , these figures show one embodiment of the inspection tool (10) wherein the guiding projections (2.3, 2.4, and 4.3) comprise, respectively, a fixing element (11, 12, and 13). These fixing elements (11, 12, 13) are configured to fix the guiding projections (2.3, 2.4 and 4.3) to the arms (1, 2, and 3). -
Figure 3 shows one embodiment of the inspection tool (10) without the fixing elements (11, 12, and 13) in order to observe details of each guiding projections (2.3, 2.4 and 4.3). These guiding projections (2.3, 2.4, and 4.3) are configured to slide along the guiding cavities (7, 5, and 6) respectively. - Additionally, as it can be seen in
Figure 1 , the first arm (1) may vary its position in relation to the second arm (2) with a constant angle (C) formed between the central part (1.2) of the first arm (1) and the second arm (2). Also, the third arm (3) may vary its position in relation to the second arm (2) with a constant angle (D) formed between said second and third arm (2, 3). - In a particular embodiment the angle (C) is comprised between 100° - 115°. In a more particular embodiment, the angle (C) is 108°.
- In a preferred embodiment the angle (D) has a value of 90°. Advantageously, this angle (D) ensures the tangency between the inspection tool (10) and the lug's hole (15). Furthermore, said angle (D) ensures that the beam of the probe is perpendicular to the crack.
-
Figures 5A-5B and6A-6B show one embodiment of an inspection device (20) for inspection of a metallic lug (18) that comprises an inspection tool (10) and a probe (14) wherein the inspection tool (10) is configured to be used depending on the diameter of the leg's hole to be inspected. The first arm (1) of the tool (10) comprises a first lateral part end (1.1.1) and a second lateral part end (1.3.1) which are configured to be in contact with the edge of the hole (15) of the metallic lug (18). Additionally, the third arm (3) of the tool (10) comprises a first and a second end (3.1, 3.2) which are configured to be in contact with the edge of the hole (15) of the metallic lug (18). -
Figures 5A-5B show one embodiment of the inspection device (20), wherein the tool (10) is located on the surface of the metallic lug (18), and wherein the first lateral part end (1.1.1) and the first end (3.1) are in contact with the edge of the hole (15). Also, the probe (14) is located in the second housing part (4.2) of the housing element (4). - Furthermore,
figures 5A and5B show an example wherein the diameter of the lug's hole (15) is comprised between 15 - 100 mm. For this particular example, when the diameter of the hole (15) is comprised between 15 - 100 mm, the inspection device (20) is configured to work in the way that the first lateral part end (1.1.1) and the first end (3.1) are in contact with the edge of the hole (15). - Thus, in this example, in order to detect cracks around the metallic lug, the inspection device (20) must be moved in a first direction (clockwise direction) (16) as it can be seen in
figure 5B . -
Figures 6A-6B show one embodiment of the inspection device (20), wherein the tool (10) is located on the surface of the metallic lug (18), and wherein the seconds lateral part end (1.3.1) and the second end (3.2) are in contact with the edge of the leg's hole (15). Also, the probe (14) is located in the first housing part (4.1) of the housing element (4). - Furthermore,
figures 6A and6B shows an example wherein the diameter of the leg's hole (15) is comprised between 100 - 130 mm. For this particular example, when the diameter of the hole (15) is comprised between 100 - 130 mm, the inspection device (20) is configured to work in the way that second lateral part end (1.3.1) and the second end (3.2) are in contact with the edge of the hole (15). Thus, in this example, in order to detect cracks around the metallic lug, the inspection device (20) must be moved in a second direction (counter-clockwise direction) (17) as it can be seen infigure 6B .
the first arm, the third arm and the housing element may vary their position independently of each other in relation to the second arm.
Claims (13)
- Inspection tool (10) for inspection of a hole (15) of a metallic lug (18), comprising,- a first arm (1) comprisinga first lateral part (1.1) with a first lateral part end (1.1.1), the first lateral part end (1.1.1) being configured to be in contact with the hole (15) of the metallic lug (18),a central part (1.2),and a second lateral part (1.3) with a second lateral part end (1.3.1), the second lateral part end (1.3.1) being configured to be in contact with the hole (15) of the metallic lug (18),the first lateral part (1.1) and the central part (1.2) forming an angle (A),the second lateral part (1.3) and the central part (1.2) forming an angle (B), and said central part (1.2) comprising a guiding cavity (5),- a second arm (2) comprisinga guiding cavity (6) andtwo ends (2.1, 2.2), each end (2.1, 2.2.) comprising respective guiding projections (2.3, 2.4),- a third arm (3), comprisinga guiding cavity (7),a first end (3.1) anda second end (3.2),the first and second end (3.1, 3.2) being configured to be in contact with the hole (15) of the metallic lug (18), and- a housing element (4) comprisingwhereina first housing part (4.1),a second housing part (4.2), anda guiding projection (4.3),
the first arm (1), the third arm (3) and the housing element (4) may vary their position independently of each other in relation to the second arm (2). - Inspection tool (10) according to claim 1, wherein the guiding projections (2.3, 2.4) of the second arm (2) are linked to the first arm (1) and third arm (3) through the guiding cavities (5, 7) of each first and third arms (1, 3) respectively, such guiding projections (2.3, 2.4) being configured to slide along said guiding cavities (5, 7).
- Inspection tool (10) according to claim 1, wherein the guiding projection (4.3) of the housing element (4) is linked to the second arm (2) through the guiding cavity (6) of the second arm (2), such guiding projection (4.3) being configured to slide along said guiding cavity (6).
- Inspection tool (10) according to claim 1, wherein the housing element (4) is an interchangeable element.
- Inspection tool (10) according to claim 1, wherein the first housing part (4.1) and the second housing part (4.2) of the housing element (4) are configured to house a probe.
- Inspection tool (10) according to claim 1, wherein the first arm (1) may vary its position in relation to the seconds arm (2) with a constant angle (C) formed between the central part (1.2) of the first arm (1) and the second arm (2).
- Inspection tool (10) according to claim 1, wherein the third arm (3) may vary its position in relation to the seconds arm (2) with a constant angle (D) formed between the second and third arm (2, 3).
- Inspection tool (10) according to any of the previous claims, wherein the angle (A) is comprised between 100° - 115°, preferably 108°, and the angle (B) is comprised between 125° - 145°, preferably 135°.
- Inspection tool (10) according to any of the previous claims, wherein each guiding projection (2.3, 2.4, 4.3) comprises respectively at least a fixing element (11, 12, 13), said fixing elements (11, 12, 13) being configured to fix the guiding projections (2.3, 2.4, 4.3) to the first (1), second (2) and third (3) arms respectively.
- Inspection device (20) for inspection of a metallic lug (18), comprising,an inspection tool (10) according to any of claims 1 to 9, anda probe (14) housed in any of the first (4.1) or second (4.2) housing parts of the housing element (4).
- Inspection device (20) according to claim 10 wherein the probe is an ultrasonic probe.
- Method for detecting cracks around metallic lug comprising the following steps:a) measuring the diameter of a hole (15) of the metallic lug (18),b) providing an inspection device (20) according to any of the claims 10-11,c)positioning and regulating the inspection device (20) around the hole (15) of the metallic lug (18),d) sliding Inspection tool (10) around the hole (15) of the lug (18), ande) detecting cracks.
- Method for detecting cracks according to claims 12 further comprises applying a couplant on a surface of the lug (18) before step d).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16382447.7A EP3299130B1 (en) | 2016-09-26 | 2016-09-26 | Inspection tool and method for non-destructive inspection of a lug |
US15/715,380 US10520474B2 (en) | 2016-09-26 | 2017-09-26 | Inspection tool |
CN201710882086.9A CN107870199B (en) | 2016-09-26 | 2017-09-26 | Inspection tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16382447.7A EP3299130B1 (en) | 2016-09-26 | 2016-09-26 | Inspection tool and method for non-destructive inspection of a lug |
Publications (2)
Publication Number | Publication Date |
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EP3299130A1 true EP3299130A1 (en) | 2018-03-28 |
EP3299130B1 EP3299130B1 (en) | 2019-04-10 |
Family
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Application Number | Title | Priority Date | Filing Date |
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EP16382447.7A Active EP3299130B1 (en) | 2016-09-26 | 2016-09-26 | Inspection tool and method for non-destructive inspection of a lug |
Country Status (3)
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US (1) | US10520474B2 (en) |
EP (1) | EP3299130B1 (en) |
CN (1) | CN107870199B (en) |
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CN108582075A (en) * | 2018-05-10 | 2018-09-28 | 江门市思远信息科技有限公司 | A kind of intelligent robot vision automation grasping system |
US11313839B2 (en) * | 2019-12-16 | 2022-04-26 | The Boeing Company | Apparatus, system, and method for ultrasonic inspection of a variable radius joint |
US11940419B2 (en) | 2020-07-09 | 2024-03-26 | The Boeing Company | Apparatus, system, and method for ultrasonic inspection of a variable angle joint |
Citations (3)
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DE29703255U1 (en) * | 1997-02-24 | 1998-07-02 | Siemens AG, 80333 München | Device for checking a weld seam on the outer jacket of a reactor pressure vessel |
US7543512B2 (en) * | 2005-04-13 | 2009-06-09 | General Electric Company | Bore inspection probe |
CN104359984A (en) * | 2014-12-02 | 2015-02-18 | 台州市中奥特种设备检测技术服务有限公司 | Manual multichannel TOFD (time of flight diffraction) scanning frame |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2040440U (en) * | 1988-10-08 | 1989-07-05 | 伍炎荣 | Universal compasses |
US6829959B2 (en) * | 2002-11-11 | 2004-12-14 | The Boeing Company | Apparatus and method for moving a sensor over a workpiece |
US8161818B2 (en) * | 2008-10-29 | 2012-04-24 | Airbus Operations Gmbh | Device for detecting a flaw in a component |
US10569045B2 (en) * | 2010-10-05 | 2020-02-25 | Richard J. Arnott | Apparatus and method for maintaining airway patency and pressure support ventilation |
WO2012098561A2 (en) * | 2011-01-18 | 2012-07-26 | Swamy R K | A multipupurpose instrument for triangle solutions, measurements and geometrical applications called triometer |
JP6599279B2 (en) * | 2016-04-14 | 2019-10-30 | 三菱重工業株式会社 | Ultrasonic inspection jig and ultrasonic inspection method |
-
2016
- 2016-09-26 EP EP16382447.7A patent/EP3299130B1/en active Active
-
2017
- 2017-09-26 CN CN201710882086.9A patent/CN107870199B/en active Active
- 2017-09-26 US US15/715,380 patent/US10520474B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29703255U1 (en) * | 1997-02-24 | 1998-07-02 | Siemens AG, 80333 München | Device for checking a weld seam on the outer jacket of a reactor pressure vessel |
US7543512B2 (en) * | 2005-04-13 | 2009-06-09 | General Electric Company | Bore inspection probe |
CN104359984A (en) * | 2014-12-02 | 2015-02-18 | 台州市中奥特种设备检测技术服务有限公司 | Manual multichannel TOFD (time of flight diffraction) scanning frame |
Also Published As
Publication number | Publication date |
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US20180088085A1 (en) | 2018-03-29 |
CN107870199A (en) | 2018-04-03 |
EP3299130B1 (en) | 2019-04-10 |
US10520474B2 (en) | 2019-12-31 |
CN107870199B (en) | 2020-08-28 |
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